I have a pretty decent machine that I have had for like 2 years now I guess and for some reason I can't play any decent games on it. For example, I put Quake 4 and Prey on the lowest quality settings and the lowest resolution and it's still laggy. Here are my stats for my machine. I have not run any tests on the hardware really to tell if something is corrupt, but Windows runs fine, I just can't play crap for games. Is my machine just not good enough or do I need to upgrade something?